Most strong and thick sheet metals will require power tools for cutting, such as an angle grinder, band saw, rotary tool, circular saw, or chop saw. I used 22 gauge cold-rolled steel sheet metal ...

For small jobs like cutting stainless steel backsplash tiles, a rotary tool fitted with an abrasive metal-cutting disc works fine. For larger jobs, mount an abrasive disc in an angle grinder.

In use, the electromagnet is powered up by a small 12-volt power supply, fixing the jig in place on the stock. The angle grinder is traced around and makes a surprisingly clean cut. Check out the ...